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MSI 790FX-GD70 AM3 Overclocking w/ Phenom 2 720BE - IM STUMPED!

Discussion in 'Motherboards & Memory' started by Bioshock, May 16, 2009.

  1. Bioshock New Member

    Feb 16, 2009
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    for the most part overclocking is pretty straight forward i know, and ive been doing it for years.....the thing is, for the life of me i cant get this 720be to clock over 3360mhz no matter what i do!

    before i go any further let me say i have tried this chip in another motherboard with the same results, it just wont go past 3360! so either ive got the worst of the worst of these chips or im not doing something right

    even to run at 3360 i have to give it 1.52v which is insane! most everyone is getting 3.6-3.8ghz around 1.475-1.5v! or atleast they would be using 1.4v to hit 3360mhz!

    this voltage issue is drivin me nuts, i just got the new MSI 790FX-GD70 AM3 after replacing my XFX 8200 because i wanted to move to a full DDR3 setup (and figured surely i could push this processor to its limits).anyways heres the motherboard i have now: great board by the way


    here is a picture of the voltages and ratios in the BIOS, surely one of you gurus out there can help me to dial in this processor, and figure out why i have to give it ridiculous amounts of voltage (1.52v) to hit 3360mhz

    keep in mind, these pictures arent of my actual settings, although i have tried them and the system wouldnt even post with the cpu at that speed. lowering the speed back to 3360 let the system run fine at those voltages but thats pretty pointless to have all those overvolted at such a sorry overclock



    so starting from stock, lets walk through this together and see what we can come up with........

    /fingers crossed

    edit: also heres my temps right now at idle, which is rather high and i dont understand why really comparing to other peoples voltages...not to mention i do have a zalman 9700 cooler on this thing


    also.........if i run prime for like 2 minutes my core temps hit 60c easy, while the cpu temp is around 55c......i know people say dont go over 63c on your cpu temp but some people say thats your core temp you need to watch, others say its the cpu temp......so which is it?? actual cpu temp, or core that i need to pay attention to??

    oh yea and the way i have it set up in the bios now is 14x240=3360, NB frequency is at 2400 (10x240), HT speed is 2400 (10x240), ram speed is at 1600mhz (down clocked to 1333mhz 1:1.3333 and taken back up to 1600mhz by the HT overclock @ 240), CPU VDD = 1.40, CPU Voltage = 1.520 (also note: MSI mislabeled their voltages in every bios release......CPU VDD is actually the core voltage, and the CPU voltage is actually an offset for minor bumps in voltage)

    system specs:

    motherboard: MSI 790FX-GD70 AM3
    cpu: phenom 2 720BE
    ram: ocz flex ex ddr3 1600mhz 7-6-6-24
    power supply: ocz gamerxstream 700w
    sound: xfi elite pro
    graphics: asus top radeon hd4850
    hdd: 2x360gb in raid0 config

    so off we go, any suggestions?
    Last edited: May 16, 2009

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